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ETaker P300 Runtime Calculator
Use this source-linked record to estimate runtime from tracked capacity, output, charging, and weight fields. Unknown specs stay unknown until an official or manufacturer-grade source confirms them.
Quick answer: the ETaker P300 stores 298 Wh and delivers up to 300 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 2.3 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.
Capacity298 Wh
AC output300 W
Surgeunknown
Chemistryunknown
ConfidenceEstimated
Source regionglobal/general
Checked2026-08-27
Swipe table sideways
| Battery capacity | 298 Wh |
|---|---|
| Battery chemistry | unknown |
| AC output | 300 W |
| Surge output | unknown |
| DC output | unknown |
| USB-C output | 60 W |
| Solar input | unknown |
| Weight | 3 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | global/general |
| Last verified | 2026-08-27 |
ETaker names CPAP machines among the P300's intended loads; for therapy backup, confirm your machine's power draw and connector with its manufacturer rather than relying on an estimate. ETaker publishes no cell chemistry, surge rating, DC wattage or maximum solar input for the P300, so those fields stay unknown.
Runtime Starting Points
These are formula estimates using the tracked capacity, a 10% reserve, and each scenario's default wattage and duty cycle. They are planning starters, not measured runtimes.
Swipe table sideways
| Scenario | Default load | Estimate | Scenario confidence | Station page |
|---|---|---|---|---|
| Full-size refrigerator | 500 W at 33% | above tracked AC output | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 5h 42m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 7h 33m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 19h 40m | Estimated | Use calculator |
| LED TV | 100 W at 100% | 2h 17m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with ETaker P300 prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 298 WhContinuous output rating (W): 300 WSurge output rating (W): n/a
Estimated runtime3h 48m2h 23m – 4h 43mEstimated runtime: 3h 48m, 2h 23m – 4h 43m
Output path
Estimated runtime
3h 48mEstimated runtime: 3h 48mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative2h 23m
Estimated3h 48m
Optimistic4h 43m
Conservative assumes harder conditions; optimistic assumes favorable conditions.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 298 Wh
- Usable energy
- 228 Wh
- 298 Wh x 85% x 90% x 100% x 100%
- Running watts
- 60 W
- Average load
- 60 W
- Max surge
- n/a
- Fixed station overhead
- Unknown (not included)
- 60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
- Estimated runtime
- 3h 48m
- 228 Wh / 60 W = 3h 48m
- Output path
- AC inverter
- Efficiency (%)
- 85
- Reserve kept unused (%)
- 10
- Battery health (%)
- 100
- Cold weather loss (%)
- 0
This link contains the numeric values you entered, but not custom load names.
Source-Backed Next Steps
Smallest matching record (8h)Jackery Explorer 600 Plus
WattRunTime.com
WattRunTime estimate
Estimated runtime
3h 48mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy228 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative2h 23m
Estimated3h 48m
Optimistic4h 43m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy228 Wh298 Wh x 85% x 90% x 100% x 100%
Fixed station overheadUnknown (not included)60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime3h 48m228 Wh / 60 W = 3h 48m
Assumptions
- 298 Wh nominal battery capacity
- AC inverter output path
- 85% conversion efficiency
- 10% reserve kept unused
- 60 W average load from 1 load
- 100% battery health
- 0% temperature loss
- Fixed station overhead unknown; not included
Warnings
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
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Good fit when
- Capacity is a compact class; use it for small electronics and short essentials rather than high-wattage appliances.
- Tracked AC output is 300 W, so high-draw appliances and tools need careful filtering.
- USB-C output is tracked at laptop-class power, useful for direct DC charging when the device supports it.
Watch out for
- Surge output is unknown, so do not assume compressor, pump, or power-tool startup will work.
- Still unknown in the source-backed record: battery chemistry, surge output, dc output, solar input.
- Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.
Related ETaker Records
Nearby source-linked models from the same brand help you compare capacity, output, and unknown fields without leaving the data set.
M2000
2,008 Wh, 2,400 W AC output, confidence: Estimated.
Sources
- ETaker official P300 product page (official; checked 2026-08-27)